DVB condition receiving device integrating descrambling of basic data and normal data

Abstract

The invention relates to a DVB condition receiving device integrating descrambling of basic data and normal data. The DVB condition receiving device comprises a demultiplexer, a controller, an unpacking module and a descrambling module, transport stream TS steam received by the demultiplexer comprises basic data and normal data which have different collection rates and the same program contents, the demultiplexer, the unpacking module and the descrambling module sequentially carry out demultiplexing, unpacking and descrambling operations on the received transport stream, wherein the controller is connected with the demultiplexer and receives a user priority level to start a basic data descrambling operation or a normal data descrambling operation according to different user priority levels. By adopting the DVB condition receiving device provided by the invention, two data contents with different resolutions can be received at a receiving end, two descrambling methods with different complexity can be integrated at the receiving end, and the two data contents and the two descrambling methods are respectively correspondent to adapt to watching demands of different users on digital television programs.

Description

[0001] The present invention is a divisional application of a patent with the application number 201310179079.4, the application date is May 14, 2013, and the invention name is "DVB conditional access device with integrated basic data and normal data descrambling". technical field [0002] The invention relates to the field of digital television reception, in particular to a DVB conditional reception device integrating basic data and normal data descrambling. Background technique [0003] DVB, that is, digital video broadcasting, was initiated by the "Joint Expert Group" jointly formed by the European Telecommunications Standardization Organization, the European Electronic Standardization Organization and the European Broadcasting Union. C. There are four types of terrestrial TV DVB-T and handheld terrestrial wireless TV DVB-H. The DVB standard includes channel coding, source coding, conditional access, subtitle transmission and other components. At present, the DVB standar...

AI Technical Summary

Problems solved by technology

[0005] However, in the existing digital TV program user group, there are high-end users who need very high-definition program content. They can afford expensive TV program fees and relatively complicated receiving terminals. Therefore, they can watch high-definition program content through three-level decryption. But there are also some low-income groups who have just transferred from the free analog TV user base. For them, the continuity of the program and the economy of the program are important. less basic data streams, and provide inexpensive charging terminals that enable them to watch, for example, standard-definition TV programs

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